Home / 387,194,734.50-581,174,741.61-205,441,912.50

Finding the Fourth Proportional to 387,194,734.50, 581,174,741.61 and 205,441,912.50

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Solution

The fourth proportional to 387,194,734.50, 581,174,741.61 and 205,441,912.50 is: 308,365,893.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,194,734.50 : 581,174,741.61 = 205,441,912.50 : x
  2. Step 2: Convert to fraction form
    387,194,734.50/581,174,741.61 = 205,441,912.50/x
  3. Step 3: Cross multiply
    387,194,734.50x = 581,174,741.61 × 205,441,912.50
  4. Step 4: Simplify right side
    387,194,734.50x = 119,397,650,413,051,728
  5. Step 5: Solve for x
    x = 119,397,650,413,051,728/387,194,734.50
  6. Step 6: Final answer
    x = 308,365,893.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.